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import math snippet_normalize (cr, width, height) image = cairo.ImageSurface.create_from_png ("data/romedalen.png") w = image.get_width() h = image.get_height() pattern = cairo.SurfacePattern (image) pattern.set_extend (cairo.EXTEND_REPEAT) cr.translate (0.5, 0.5) cr.rotate (M_PI / 4) cr.scale (1 / math.sqrt (2), 1 / math.sqrt (2)) cr.translate (- 0.5, - 0.5) matrix = cairo.Matrix(xx=w * 5, yy=h * 5) pattern.set_matrix (matrix) cr.set_source (pattern) cr.rectangle (0, 0, 1.0, 1.0) cr.fill ()
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